4 results about "Magnetization curve" patented technology

This application provides a modeling method and system for predicting the core loss of a high-frequency transformer, comprising: measuring the magnetic properties of the core material at different frequencies based on an experimental platform, and obtaining the magnetization curve and loss density curve of the core material according to Ampere's circuital law; inputting the magnetization curve into a constructed geometric model, setting excitation and boundary conditions, establishing a finite element model and performing finite element simulation analysis to obtain the loss density distribution and magnetic flux density distribution within the high-frequency transformer core; and constructing a loss model by introducing a gradient coefficient and the average value of the loss density, the magnitude of the magnetic field strength gradient, and the average value of the magnitude of the magnetic field strength gradient obtained from the finite element model, to predict the core loss. This application provides important basis for material selection, geometric structure optimization, and thermal design of high-frequency transformers, helping to shorten the R&D cycle, reduce trial production costs, and improve the overall performance of high-frequency transformers.

This invention relates to the field of soft magnetic materials technology, and in particular to a Fe-Co-Al soft magnetic material, its preparation method, and its applications. The material is prepared from Fe, Co, and Al as raw materials, weighed according to an atomic ratio of Fe:Co:Al = 3:1:1, and then processed through melting, rapid cooling, and heat treatment to obtain a soft magnetic material with the chemical formula Fe₃CoAl. The resulting material has a fully ordered cubic crystal structure of type DO₃. At room temperature, it exhibits a saturation magnetization of 162 emu / g, a coercivity of approximately 28.5 Oe, and a steep initial magnetization curve, demonstrating excellent magnetization sensitivity and rapid response even under weak magnetic fields. The Fe₃CoAl soft magnetic material of this invention significantly improves permeability and reduces coercivity through the introduction of Co, and its preparation process is simple, has a short cycle time, and is suitable for industrial production.